This too, shall pass.
I am so, so sorry that you are going through this devastating time.
I had to have two, 6 months apart.
Take whatever pain relief they suggest.
I agree with @Monkeyfloor in that I was exhausted for the first 24 hours, and then bounced back physically.
I was booked in, and once in my cubicle, spoke to the nurse, who took all my health details. Then, the anaesthetist had a talk, and asked about any loose teeth.
I was then given pain relief (usually opiate based, but I had naproxen, as I can't take opiates) and a tablet (by mouth) to start relaxing the cervix. This needed up to an hour to work.
I then had to get changed into a hospital gown, and as I was bleeding heavily, wedge a pad between my legs.
Was then wheeled round to the theatre, where I had a cannula put in.
Woke up in recovery, then wheeled back to the ward. This was a little day ward just for women having a D&C, same entrance as to the maternity wing, but then left, rather than right. So, at least, I wasn't surrounded by pregnant women.
One, recovery was swift, and I left (with DH) after about an hour (needed to eat, drink and have a wee).
The other, my blood pressure dropped worryingly during the op, so I came round with a drip attached. That took about 2 hours to be ready to leave the hospital.
I hope this helps.
Once again, I am so sorry for your loss.